As NASA prepares for the Arctic-COLORS large-scale field campaign (https://arctic-colors.gsfc.nasa.gov/) in the near future, it is imperative to identify and characterize existing field data sets, modeling activities, and remote sensing capabilities within the coastal Arctic region that make up the Arctic-COLORS study domain. To work towards accomplishing these aims, an open virtual Community Meeting is scheduled for October 18-20, 2021 between 1:00-4:00 pm EDT, as a pre-Arctic-COLORS data synthesis activity, sponsored by NASA and the OCB Project Office. We invite stakeholders of the Arctic-COLORS study region to participate in this community meeting to discuss and share information on past, current, and planned field measurement, modeling, and remote sensing activities. This virtual Community Meeting will bring together a multidisciplinary network of scientists conducting research on biogeochemical fluxes and exchanges along the Arctic aquatic continuum, from rivers to the coastal Arctic Ocean, to lay the groundwork for what data are available, where data are hosted, and who to involve in retrieving them. This synthesis activity is an important stepping-stone toward the development of the Arctic-COLORS Implementation Plan and eventually the Arctic-COLORS field campaign itself.